feat: add yarn dev to start both app & backend

package.json

@@ -5,7 +5,9 @@
     "node": "12"
   },
   "scripts": {
+    "dev": "concurrently 'yarn start' 'yarn start-backend'",
     "start": "yarn workspace example-app start",
+    "start-backend": "yarn workspace example-backend start",
     "build": "lerna run build",
     "tsc": "tsc",
     "clean": "backstage-cli clean && lerna run clean",
@@ -35,6 +37,7 @@
   "devDependencies": {
     "@spotify/eslint-config-oss": "^1.0.1",
     "@spotify/prettier-config": "^8.0.0",
+    "concurrently": "^5.2.0",
     "husky": "^4.2.3",
     "lerna": "^3.20.2",
     "lint-staged": "^10.1.0",

yarn.lock

@@ -7029,6 +7029,21 @@ concat-with-sourcemaps@^1.1.0:
   dependencies:
     source-map "^0.6.1"
 
+concurrently@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.npmjs.org/concurrently/-/concurrently-5.2.0.tgz#ead55121d08a0fc817085584c123cedec2e08975"
+  integrity sha512-XxcDbQ4/43d6CxR7+iV8IZXhur4KbmEJk1CetVMUqCy34z9l0DkszbY+/9wvmSnToTej0SYomc2WSRH+L0zVJw==
+  dependencies:
+    chalk "^2.4.2"
+    date-fns "^2.0.1"
+    lodash "^4.17.15"
+    read-pkg "^4.0.1"
+    rxjs "^6.5.2"
+    spawn-command "^0.0.2-1"
+    supports-color "^6.1.0"
+    tree-kill "^1.2.2"
+    yargs "^13.3.0"
+
 config-chain@^1.1.11:
   version "1.1.12"
   resolved "https://registry.npmjs.org/config-chain/-/config-chain-1.1.12.tgz#0fde8d091200eb5e808caf25fe618c02f48e4efa"
@@ -7820,6 +7835,11 @@ date-fns@^2.0.0-alpha.27:
   resolved "https://registry.npmjs.org/date-fns/-/date-fns-2.12.0.tgz#01754c8a2f3368fc1119cf4625c3dad8c1845ee6"
   integrity sha512-qJgn99xxKnFgB1qL4jpxU7Q2t0LOn1p8KMIveef3UZD7kqjT3tpFNNdXJelEHhE+rUgffriXriw/sOSU+cS1Hw==
 
+date-fns@^2.0.1:
+  version "2.15.0"
+  resolved "https://registry.npmjs.org/date-fns/-/date-fns-2.15.0.tgz#424de6b3778e4e69d3ff27046ec136af58ae5d5f"
+  integrity sha512-ZCPzAMJZn3rNUvvQIMlXhDr4A+Ar07eLeGsGREoWU19a3Pqf5oYa+ccd+B3F6XVtQY6HANMFdOQ8A+ipFnvJdQ==
+
 dateformat@^3.0.0:
   version "3.0.3"
   resolved "https://registry.npmjs.org/dateformat/-/dateformat-3.0.3.tgz#a6e37499a4d9a9cf85ef5872044d62901c9889ae"
@@ -16888,6 +16908,15 @@ read-pkg@^3.0.0:
     normalize-package-data "^2.3.2"
     path-type "^3.0.0"
 
+read-pkg@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.npmjs.org/read-pkg/-/read-pkg-4.0.1.tgz#963625378f3e1c4d48c85872b5a6ec7d5d093237"
+  integrity sha1-ljYlN48+HE1IyFhytabsfV0JMjc=
+  dependencies:
+    normalize-package-data "^2.3.2"
+    parse-json "^4.0.0"
+    pify "^3.0.0"
+
 read-pkg@^5.2.0:
   version "5.2.0"
   resolved "https://registry.npmjs.org/read-pkg/-/read-pkg-5.2.0.tgz#7bf295438ca5a33e56cd30e053b34ee7250c93cc"
@@ -17546,6 +17575,13 @@ rxjs@^6.3.3, rxjs@^6.4.0, rxjs@^6.5.3, rxjs@^6.5.4, rxjs@^6.5.5:
   dependencies:
     tslib "^1.9.0"
 
+rxjs@^6.5.2:
+  version "6.6.0"
+  resolved "https://registry.npmjs.org/rxjs/-/rxjs-6.6.0.tgz#af2901eedf02e3a83ffa7f886240ff9018bbec84"
+  integrity sha512-3HMA8z/Oz61DUHe+SdOiQyzIf4tOx5oQHmMir7IZEu6TMqCLHT4LRcmNaUS0NwOz8VLvmmBduMsoaUvMaIiqzg==
+  dependencies:
+    tslib "^1.9.0"
+
 safe-buffer@5.1.1:
   version "5.1.1"
   resolved "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
@@ -18146,6 +18182,11 @@ space-separated-tokens@^1.0.0:
   resolved "https://registry.npmjs.org/space-separated-tokens/-/space-separated-tokens-1.1.5.tgz#85f32c3d10d9682007e917414ddc5c26d1aa6899"
   integrity sha512-q/JSVd1Lptzhf5bkYm4ob4iWPjx0KiRe3sRFBNrVqbJkFaBm5vbbowy1mymoPNLRa52+oadOhJ+K49wsSeSjTA==
 
+spawn-command@^0.0.2-1:
+  version "0.0.2-1"
+  resolved "https://registry.npmjs.org/spawn-command/-/spawn-command-0.0.2-1.tgz#62f5e9466981c1b796dc5929937e11c9c6921bd0"
+  integrity sha1-YvXpRmmBwbeW3Fkpk34RycaSG9A=
+
 spdx-correct@^3.0.0:
   version "3.1.0"
   resolved "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.0.tgz#fb83e504445268f154b074e218c87c003cd31df4"
@@ -20295,11 +20336,6 @@ whatwg-fetch@^2.0.0, whatwg-fetch@^2.0.4:
   resolved "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz#dde6a5df315f9d39991aa17621853d720b85566f"
   integrity sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng==
 
-whatwg-fetch@^3.2.0:
-  version "3.2.0"
-  resolved "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-3.2.0.tgz#8e134f701f0a4ab5fda82626f113e2b647fd16dc"
-  integrity sha512-SdGPoQMMnzVYThUbSrEvqTlkvC1Ux27NehaJ/GUHBfNrh5Mjg+1/uRyFMwVnxO2MrikMWvWAqUGgQOfVU4hT7w==
-
 whatwg-mimetype@^2.1.0, whatwg-mimetype@^2.2.0, whatwg-mimetype@^2.3.0:
   version "2.3.0"
   resolved "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz#3d4b1e0312d2079879f826aff18dbeeca5960fbf"
@@ -20710,7 +20746,7 @@ yargs-parser@^3.2.0:
     camelcase "^3.0.0"
     lodash.assign "^4.1.0"
 
-yargs@^13.3.2:
+yargs@^13.3.0, yargs@^13.3.2:
   version "13.3.2"
   resolved "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz#ad7ffefec1aa59565ac915f82dccb38a9c31a2dd"
   integrity sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==